Waste pipe for lavatories and sinks and method of manufacturing the same



July 2, 1929. R. H. MUELLER WASTE P E FOR LAVATORIES AND 51 MET OF Fil 5 AND MANUFACTURING THE E ed Oct. 26, 1925 2 Sheets-Sheet l y 2, 1929- R. H. MUELLER 1.719.019

WASTE PIPE FOR LAVATORIES AND SINKS AND METHOD CF MANUFACTURING THE SAME Filed Oct. 26, 1925 2 Sheets-Sheet 2 Z Kl 2 2 Z h & 6 7 Z Z 7739b 7?? W K ZQ 'Q E d5 J51 1 11 WW till " the openin "11.,

Patented July 2,1929. I

UNITED STATES PATENTJ-OFFICE.

ROBERT E. MUELLER, on menus, ILLINOIS, Assmnoa r0 ADOLPH MUELLER, mausrim, or DECATUR, rumors.

WASTE IPIPE FOR LAVATORIES AND SINKS AND METHOD OF MANUFACTURING- THE SAME.

Application filed October 26, 1925. Serial No. 64,914;

The present invention relates to waste pipe for basins and the like and has as its object the provision of an improved waste pipe and drain connecting tube of integral structure. The invention also seeks to provide an im roved method for manufacturing this article.

Heretofore drain connections for basins and the like have consisted of a pipe fitting in the drain opening of a basin and havinga flange overlying the surface of the basin around said opening. The pipe is ordinarily screw-threaded, to receive the end of a tube which is formed with a flange adapted to abut the under surface of the basin, the tube extending downwardly and having a smooth peripheral surface adapted to make a slip joint with the drain pipe.

The present invention seeks to afford a waste pipe and tube of integral structure and a simplified method for producing this combined structure.

The invention will become clear as the description proceeds in connection with a preferred embodiment disclosed in the accompanying drawings, wherein:

Figure 1 is a vertical sectional view showing the improved waste pipe in position;

Figure 2 is a horizontal section of the tube on the line 22 of Figure 1;

Figure 3 is a fragmentary vertical sectional view at the upper end of the tube; and

Figures 4 to 8, inclusive, show the successive steps in the manufacture of the combined pipe and connection.

Referring to the accompanying drawings for a more detailed description, indicates a portion of a basin, tub or the like having the waste pipe opening or passage 11 which err-- tends across an overflow passage 12 formed within the basin and opening into the passage 11. The combined. waste pipe and drain connection is in the form of an integral tube of brass or other suitable material having at one end a relatively fiat flange 18 overlying a gaslrct it fitted in a counter-sink surrounding The tube extends downwardly and has its wall 15 at-its lower end thinned for a substantial distance with its external surface preferably smooth in order to fit within a drain pipe and make a slip joint connection. An intermediate portion 16 of the tube wall, which is not reduced, is externally threaded to receive lock nut 17 having thereabove a washer 18 and gasket 19, the latter fitting within the boss 20 beneath the basin to prevent leakage around the pipe and tube from the passage 12. The pipe portion of the tube within the passage 11 has formed therein a series of openings 21 to receive water flowing through the passage 12 and also has formed below the openings 21, two pair of diametrically opposed openings 23 receiving the ends of cross pins 24 which intersect one another within the tube, and at their point of intersection, are preferably stamped together to interlock them. These pins serve as a strainer to prevent passage into the tube of Eb ects which tend to prevent drainage of the asin.

The device shown and described, it will be noted, is of integral structure with the exception of the cross pins 24 and the locking nut and gasket surrounding the tube. It may be produced in any suitable manner, although there is disclosed herein and claimed a preferred method of manufacture.

Referring to Figures 4: to 8 inclusive, the combined pipe and connection is formed from a length of tube 25 which may be of brass. The end of the blank (Fig. 4:) is first spun, as illustrated in Figure 2, to form the flange 13, and either subsequent to or preceding the formation of the flange, the openings 21, 23 are stamped. Another step in the manufacture of the article is the thinning of the other end of the tube for a substantial distance which is accomplished by means of any suitable tool such as a box tool, This thinning step, which, of course, may be performed either prior to or subsequent to the stamping of the openings 23 and the formation of the dangeltl, produces the structure illustrated in Figure 6.. A further step, which, preferably, but not necessarily, follows thinning of the pipe wall as at 15, includes the formation of the threading 16 on the intermediate lilllr" thinned portion of the wall and the tube may be completed by inserting the pins 241 in the openings 23 and these, after insertion, are stamped together at their point of intersection.

Ubviously, the order of the various steps recited may be changed without departing from the invention although the preferred order to steps is illustrated in the drawings (Figs. 1 to 8) and herein described,

It being understood that various modificalllll tions may be made in the structure and method described without departing from the invention, what I claim is:

l. The method of producing a waste pipe for basins and the like which consists in the following steps: Hanging an end of a length of pipe, reducing the thickness of the pipe wall. at its other end for a substantial distance, and externally threading an intermediate portion of the pipe.

2.. The method of producing a Waste pipe for basins'and the like which consists in the following steps: flanging an end of a length of pipe, reducing the. thickness of the pipe wall at its other end for a substantial distance, and externally threading an unthinned portion of the pipe.

3. The method of producing a waste plpe for basins and the like which consists in the following steps: flanging an end of a length of pipe initially of uniform thickness from end to end, reducing the thickness of the pipe wall at its other end for a substantial distance, and externally threading a portion of the pipe which is spaced frolnboth ends.

4.. The method of producing a waste pipe for basins and the like which consists in the following steps: fianging an end of a length of pipe initially of uniform thickness from end to end, reducing the thickness of the pipe wall at its other end for a substantial distance, and externally threading all-intermediate unthinned portion of the; pipe which is spaced from both ends.

5. The method of producing a waste pipe for basins and the like which consists in the following steps: providing a length of pipe of uniform thickness from end to end, flanging an end of said length of pipe, forming a series of openings in the wall of the pipe adjacent the flanged end, reducing the thickness of the pipe Wall at its other end for a substantial distance, and externally threading an intermediate portion of the pipe.

6. The method of producing a waste pipe folibasins and the like which consists in the :to lowin ste s: rovidin a len th of i e of unifoFm th ickribss froni end to end, flinging an end of said length of pipe, forming 2.

series of openings in the wall of the pipe adjacent the flanged end and a second series of openings larger than said-first mentioned series, reducing the thickness of the pipe wall at its other end for a substantial distance, and externally threading an intermediate portion of the pi e.

7. The metho of producing a waste pi )e for basins and the like which consists in tile followin steps: providing a length of pipe of uniform thickness from end to end, flanging an end of said length of pipe, forming a series of openings in the wall of the pipe adjacent the flanged end, reducing the thickness of the pipe wall at its other end for a substantial distance, externally threading an intermediate portion of the pipe, and inserting a plurality of pins in said openings, said pins extending across the pipe and intersecting one another to form a strainer.

8. The method of producing a waste pi )e for basins and the like which consists in the following steps: providing a length of pipe 0t uniform thickness from end to end, flanging an end of said length of pipe, forming a series of openings in the wall of the pipe adjacent the flanged end, reducing the thickness of the pipe wall at its other end for a substantial distance, externally threading an intermediate portion of the pipe, insertin a plurality of pins in said openings, said pins extending across the pipe and intersecting one another to form a strainer, and stamping said pins together at their oint of intersection whereby to interlock t em.

9. A waste pipe for basins and the like comprising an integral tube formed integrally at one end with a flange and having a series of openings in its wall adjacent said flange, said tube having its wall thinned a substantial distance at its other end, circumferentially threading intermediate the ends of said tube, and intersecting cross pins in said tube s aced from said flanged end, said pins being interlocked at their point of intersection.

In testimony whereof I have hereunto set my hand.

ROBERT H. MUELLER. 

